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Johan Bijnens in front of his whiteboard

Johan Bijnens

Professor, Deputy Head of Division

Johan Bijnens in front of his whiteboard

The pion mass and decay constant at three loops in two-flavour chiral perturbation theory

Author

  • Johan Bijnens
  • Nils Hermansson Truedsson

Summary, in English

A calculation of the pion mass and decay constant at NNNLO in two-flavour chiral perturbation theory is presented. The results are cross-checked by using both the exponential and square root parametrizations of the Goldstone matrix field, as well as by comparing to the known leading log coefficients of the two quantities. A small numerical study of the quark mass dependence is performed, and for a physical quark mass there is good agreement with lower order results.

Department/s

  • Theoretical Particle Physics - Has been reorganised

Publishing year

2017-11-01

Language

English

Publication/Series

Journal of High Energy Physics

Volume

2017

Issue

11

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • Chiral Lagrangians
  • Effective Field Theories

Status

Published

Project

  • Higher Order Calculations for Low Energy Precision Physics

ISBN/ISSN/Other

  • ISSN: 1029-8479